Covered metal roll



L1. CUNNINGHAM.

COVERED METAL ROLL.

APPLICATLON FILED JULY 8.1920.

1,381,286. Patented-June 14, 1921.

Fig.7- I AS Q 1a M \LWV ei Uohn d. Cunningham by Jmd Mum UNITED STATESJOHN J. CUNNINGHAM, OF MANCHESTER, NEVJ HAIMPSHIRE.

COVERED METAL ROLL.

Application filed July 6, 1920.

T 0 all whom it may concern.

Be it known that I, JOHN J. CUNNING- HAM, a citizen of the UnitedStates, resident of anchester, county of Hillsborough, State of NewHampshire, have invented an Improvement in Covered Metal Rolls, of whichthe following description, in connection with the accompanying drawing,is a specification, like characters on the drawing representing likeparts.

This invention relates to covered metal rolls. Such metal rolls coveredwith a covering layer of leather or other non-metallic material arecommonly used in spinning and textile machinery, but are useful for manyother purposes. Difficulty is encountered in permanently securing thecovering layer to the periphery of the metal roll. When a cementingagent, such as glue, is employed to fasten the covering layer to themetal periphery of the roll and when the roll is subjected to rubbing orrolling action the cementing agent often becomes crystallized and thebond very easily breaks allowing the covering material to separate fromthe metal.

' The object of this invention is to provide a roll in which thecovering layer shall be securely fastened to the metal roll periphery soas to prevent lifting or creeping of the covering layer.

lVith the foregoing general object in view the invention resides in thenovel feature hereinafter fully described and claimed, the descriptivematter being supplemented by the accompanying drawings which form a partof the specification and'in which- Figure 1 is a side elevation of aroll embodying a preferred form of the invention.

Fig. 2 is a diametrical section taken on the line 2-2 of Fig. 1.

Fig. 3 is a detail in transverse section showing the position of theends of the bind-' mg wire ready for fastening.

Fig. 4 is a detail similar to Fig. 3 showing the binding wire fasteningin position.

Fig. 5 is a detail of Fig. 3 showing the ends of the binding wiretwisted together.

Fig. 6 is a detail in axial cross section taken on the line 66 of Fig. 1

Fig. 7 is a plan view of a roll showing another modification of theinvention The metal roll itself may be of any suitable size and form. Inthe construction illustrated a roll suitable for use on a spinning frameis shown and comprises the hub Specification of Letters Patent.

Patented June 14:, 1921. Serial No. 394,765.

1 the web or spider 2 and the flange 3 having the flat exteriorperiphery 4.

The covering other suitable non-metallic material and the main object ofthe invention is to fasten this covering layer 5 securely to theperiphery 4 of the metal roll so that the covering layer will not liftor creep when the roll is in use.

In rolls used in the textile art this covering layer 5 is generally usedas a foundation for an outer covering layer 6 of very fine and highgrade leather. This outer covering layer 6 takes the wear and has to bereplaced from time to time. It can be cemented satisfactorily to theinner covering layer. But difficulty is encountered in cementing orsecuring the main or inner covering layer 5 to the metal periphery ofthe roll. The present invention affords a means by which this difiicultyis eliminated.

In the present invention a wire binder is employed encircling thecovering material. There may be one or more of these wire binders asdesired or the wire binder may be in the form of a continuous helix asillustrated in Fig. 7. The wire binder is placed under tension before itis secured in position and will embed itself into the surface of acovering layer or if desired the covering layer may first be grooved asat 8 to receive the wire binder and thus insure an even outer peripheralsurface on the inner covermg layer 5 to receive the outer covering layer6.

The inner covering layer is placed in posit1on on the peripher of themetal roll and may first be cemented or glued thereto if desired. Thewire binder 7 is then placed about the outer covering layer and in thegroove therein if a groove is employed. Thls wire binder is then broughtunder a considerable tension so as to firmly clamp the covering layer 5against the roll periphery and the wire binder is then secured inposition. Various means may be employed for securing the wire binderunder tension in position and preferably this is done by securing theeIlClS of the wire binder to the metal roll. In the construction illustrated in Figs. 1, 2, 3 and 4 the ends 9 of the wire binder are passedthrough a radial hole in the covering layer 5 and the flange 3 on theroll. These ends are then pulled inwardly so as to bring the wire underthe heavy tension. A tapered metal pin 10 shown in Fig. 4 is then drivenin layer 5 may be of leather or' of the metal roll at a point the endsof the wire to place thus locking holding the wire binder the metal rolland under tension.

As shown in Fig. 5 the ends 9 of the wire binder 7 may after the wirebinder has been brought under tension be twisted together and then atapered pin driven in to lock the twisted ends to the metal roll, in thesame manner as shown in Fig. l.

It may also be desirable especially in rolls of the larger sizes tosecure the wire binder or points intermediate or its ends and thusdoubly insure the prevention of lifting or creeping oi"- the coveringlayer. Such a construction is indicated in Figs. 1, and 6 where at apoint diametrically opposite to that at which the ends of the binderwire are secured in place a second securing of the binder wire to themetal roll is effected. At this point a wire staple 11 is passed overthe binder wire 7 and driven into a he" 12 extending radially throughthe covering layer 5 and the flange 3. A tapered metal pin 13 is thendriven in alongside the staple thus firmly locking the staple andconsequently the binder wire to the metal roll at this point.

As many binder wires encircling the roll may be employed as desired andin Figs. 2 and 6 two such binder wires are shown. It is already pointedout the binder wire may also be in the form of a continuous helix of anvdesired pitch and such a construction is illustrated in Fig. 7 where thebinder wire 1 1 is shown as extending in a continuous helii; about theperiphery of a wide roll 15. in this case the binder wire 16 are passedthrough radial holes in the covering layer and metal roll, the wire isbrought under heavy tension and tapered pins 17 driven into the holessecurends of the ing the ends of the wire to the metal r0ll.' Inaddition at a plurality or" points along the helix a fastening means18of the form illustrated in Fig. 6 may be employed to iasten the binderwire at these points securely to the metal roll.

The finishing or outer covering layer 6 ma 1 then be secured in place bycementing it in the usual manner to the covering layer 5.

It is obvious that the construction and method of application of thisinvention may be varied to meet ditlerent conditions and requirements.

Having thus described my invention what 1 claim as new and desire tosecure by Letters Patent isl. The combination of a metal roll a coveringlayer for the roll periphery, and a wire binder encircling the coveringlayer and fastened under tension at its ends and at a point or point-sintermediate of its ends to the roll whereby the covering layer issecurely held against the roll periphery and lifting or creeping of thecovering layer is prevented.

2. lhe combination of a metal roll, a covering layer for the rollperiphery, the said roll and covering layer having an alined holeextending generally "radially therethrough, a wire binder encircling thecoveringlayer and having its ends drawn into said hole under. tensionand a tapered pin driven into the hole and locking the ends of thebinder wire therein whereby the covering layer is securely held againstthe roll periphery and lifting or creeping of the covering layer isprevented.

in testimony whereof, I have signed my name to this specification.

JOHN J. CUNNINGHAM.

